JRE slower on Linux
Hi,
I find that Java Applications run slower on Linux than on Windows. Particularly Swing apps are very slow to open on Linux. There is a difference of upto five seconds even while opening small apps.
Why is this so?? Is JRE not well optimized for Linux??
15.12.2008
though the problem happend a long time ago and might be fixed,
possible somebody which come across it again.
As far as i understand its a "sloppy" logging problem and has to
do with the xorg driver.
there is a debian report for it.
Debian Bug report logs - #481745
libxcb: sloppy locking needs to be on by default.
possible the libmawt code needs a small change.
i had the proble in a debian-lenny environment -- possible the fix
did not make the way.
#0 /usr/lib/libxcb-xlib.so.0 [0xdfe80767]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_unlock+0x31) [0xdfe808b1]
#2 /usr/lib/libX11.so.6(_XReply+0x254) [0xdfec6c44]
#3 /usr/jdk1.6.0_03/jre/lib/i386/xawt/libmawt.so [0xe024964e]
greetings robert
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Locking assertion failure. Backtrace:
#0 /usr/lib/libxcb-xlib.so.0 [0xb7d83767]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_unlock+0x31) [0xb7d838b1]
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#4 /opt/jav/jre/lib/i386/xawt/libmawt.so [0xab8f1f97]
#5 /opt/jav/jre/lib/i386/xawt/libmawt.so [0xab8f2248]
#6 /opt/jav/jre/lib/i386/xawt/libmawt.so(Java_sun_awt_X11GraphicsEnvironment_initDisplay+0x2f) [0xab8f254f]
#7 [0xb5d4b4ee]
#8 [0xb5d43ea5]
#9 [0xb5d43ea5]
#10 [0xb5d41243]
#11 /opt/jav/jre/lib/i386/client/libjvm.so [0x620bc6d]
#12 /opt/jav/jre/lib/i386/client/libjvm.so [0x630a828]
#13 /opt/jav/jre/lib/i386/client/libjvm.so [0x620bb00]
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#15 /opt/jav/jre/lib/i386/libjava.so(Java_java_security_AccessController_doPrivileged__Ljava_security_PrivilegedAction_2+0x3d) [0xb7d5c96d]
#16 [0xb5d4b4ee]
#17 [0xb5d43d4d]
#18 [0xb5d41243]
#19 /opt/jav/jre/lib/i386/client/libjvm.so [0x620bc6d]
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Locking assertion failure. Backtrace:
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#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_unlock+0x31) [0xb7dad8b1]
#2 /usr/lib/libX11.so.6(_XReply+0xfd) [0xab822a8d]
#3 /opt/jav/jre/lib/i386/xawt/libmawt.so [0xab93364e]
#4 /opt/jav/jre/lib/i386/xawt/libmawt.so [0xab911f97]
#5 /opt/jav/jre/lib/i386/xawt/libmawt.so [0xab912248]
#6 /opt/jav/jre/lib/i386/xawt/libmawt.so(Java_sun_awt_X11GraphicsEnvironment_initDisplay+0x2f) [0xab91254f]
#7 [0xb5d754ee]
#8 [0xb5d6dea5]
#9 [0xb5d6dea5]
#10 [0xb5d6b243]
#11 /opt/jav/jre/lib/i386/client/libjvm.so [0x620bc6d]
#12 /opt/jav/jre/lib/i386/client/libjvm.so [0x630a828]
#13 /opt/jav/jre/lib/i386/client/libjvm.so [0x620bb00]
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#15 /opt/jav/jre/lib/i386/libjava.so(Java_java_security_AccessController_doPrivileged__Ljava_security_PrivilegedAction_2+0x3d) [0xb7d8696d]
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#17 [0xb5d6dd4d]
#18 [0xb5d6b243]
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#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_unlock+0x31) [0xb7d548b1]
#2 /usr/lib/libX11.so.6(_XReply+0xfd) [0xab7d2a8d]
#3 /opt/jav/jre/lib/i386/xawt/libmawt.so [0xab8e364e]
#4 /opt/jav/jre/lib/i386/xawt/libmawt.so [0xab8c1f97]
#5 /opt/jav/jre/lib/i386/xawt/libmawt.so [0xab8c2248]
#6 /opt/jav/jre/lib/i386/xawt/libmawt.so(Java_sun_awt_X11GraphicsEnvironment_initDisplay+0x2f) [0xab8c254f]
#7 [0xb5d1c4ee]
#8 [0xb5d14ea5]
#9 [0xb5d14ea5]
#10 [0xb5d12243]
#11 /opt/jav/jre/lib/i386/client/libjvm.so [0x620bc6d]
#12 /opt/jav/jre/lib/i386/client/libjvm.so [0x630a828]
#13 /opt/jav/jre/lib/i386/client/libjvm.so [0x620bb00]
#14 /opt/jav/jre/lib/i386/client/libjvm.so(JVM_DoPrivileged+0x34b) [0x62619bb]
#15 /opt/jav/jre/lib/i386/libjava.so(Java_java_security_AccessController_doPrivileged__Ljava_security_PrivilegedAction_2+0x3d) [0xb7d2d96d]
#16 [0xb5d1c4ee]
#17 [0xb5d14d4d]
#18 [0xb5d12243]
#19 /opt/jav/jre/lib/i386/client/libjvm.so [0x620bc6d]
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#0 /usr/lib/libxcb-xlib.so.0 [0xb7d81767]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_unlock+0x31) [0xb7d818b1]
#2 /usr/lib/libX11.so.6(_XReply+0xfd) [0xab7f2a8d]
#3 /opt/jav/jre/lib/i386/xawt/libmawt.so [0xab90364e]
#4 /opt/jav/jre/lib/i386/xawt/libmawt.so [0xab8e1f97]
#5 /opt/jav/jre/lib/i386/xawt/libmawt.so [0xab8e2248]
#6 /opt/jav/jre/lib/i386/xawt/libmawt.so(Java_sun_awt_X11GraphicsEnvironment_initDisplay+0x2f) [0xab8e254f]
#7 [0xb5d494ee]
#8 [0xb5d41ea5]
#9 [0xb5d41ea5]
#10 [0xb5d3f243]
#11 /opt/jav/jre/lib/i386/client/libjvm.so [0x620bc6d]
#12 /opt/jav/jre/lib/i386/client/libjvm.so [0x630a828]
#13 /opt/jav/jre/lib/i386/client/libjvm.so [0x620bb00]
#14 /opt/jav/jre/lib/i386/client/libjvm.so(JVM_DoPrivileged+0x34b) [0x62619bb]
#15 /opt/jav/jre/lib/i386/libjava.so(Java_java_security_AccessController_doPrivileged__Ljava_security_PrivilegedAction_2+0x3d) [0xb7d5a96d]
#16 [0xb5d494ee]
#17 [0xb5d41d4d]
#18 [0xb5d3f243]
#19 /opt/jav/jre/lib/i386/client/libjvm.so [0x620bc6d]
java_vm: xcb_xlib.c:82: xcb_xlib_unlock: Assertion `c->xlib.lock' failed.
Could not read ack from child process
Plugin: Java VM process has died.
Could not start JavaVM!
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[arch@archbox ~]$ Note that this error happens with all browsers.
Thanks.15.12.2008
though the problem happend a long time ago and might be fixed,
possible somebody which come across it again.
As far as i understand its a "sloppy" logging problem and has to
do with the xorg driver.
there is a debian report for it.
Debian Bug report logs - #481745
libxcb: sloppy locking needs to be on by default.
possible the libmawt code needs a small change.
i had the proble in a debian-lenny environment -- possible the fix
did not make the way.
#0 /usr/lib/libxcb-xlib.so.0 [0xdfe80767]
#1 /usr/lib/libxcb-xlib.so.0(xcb_xlib_unlock+0x31) [0xdfe808b1]
#2 /usr/lib/libX11.so.6(_XReply+0x254) [0xdfec6c44]
#3 /usr/jdk1.6.0_03/jre/lib/i386/xawt/libmawt.so [0xe024964e]
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startas wrote:So, this bug https://github.com/linuxmint/Cinnamon/issues/2465 affects all new cinnamon 2.x versions. But linux mint 17 with cinnamon doesnt have this bug, and arch linux has, what is the difference ?
One of the posters pointed out that it may have something to do with VSYNC being enabled in your Graphics drivers.
I never really experienced this issue with Cinnamon because I have VSYNC turned off in AMD Catalyst.. -
Hi, I have this HP printer in my company (installed on the LAN).If I want to print a document with multiple page or multiple document (the go in the printer queue), there is a time between each document and each page of the document printed (like 1-3 seconds), if I print from Linux (Ubuntu 14.10 and Ubuntu 15.04)I don't have this time when I print from Windows. Is it a problem due to Linux driver?The driver is : HP Officejet Pro X476-X576 MFP Postscript (recommended) (color, 2-sided printing) Thank you.
>> ... Is it a problem due to Linux driver? ... Probably - but as I have no access to this printer model, nor to any *n*x systems, I can't confirm. I suspect that the linux driver may render each page as a series of encapsulated, compressed raster images, which the printer unencapsulates and uncompresses, then prints the resultant dots. It may be that the Windows driver uses a much more efficient command set, especially if the source document being printed is primarily text, rather than bitmap images.
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